Hi, a bit of system info would help e.g. inxi -zv8. 
Having checked re. lib32-libjpeg-turbo, I don’t think this in itself is a system-critical package:
pamac search lib32-libjpeg-turbo
lib32-libjpeg-turbo 3.1.0-1 [Installed] multilib
JPEG image codec with accelerated baseline compression and decompression multilib
… and
pacman -Qii lib32-libjpeg-turbo
Name : lib32-libjpeg-turbo
Version : 3.1.0-1
Description : JPEG image codec with accelerated baseline compression and decompression
Architecture : x86_64
URL : https://libjpeg-turbo.org/
Licenses : BSD-3-Clause IJG
Groups : None
Provides : libjpeg.so=8-32 libturbojpeg.so=0-32
Depends On : lib32-glibc libjpeg-turbo=3.1.0
Optional Deps : None
Required By : lib32-gdk-pixbuf2 lib32-libtiff
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 1481.52 KiB
Packager : Antonio Rojas <arojas@archlinux.org>
Build Date : Thu 26 Dec 2024 09:17:23 GMT
Install Date : Tue 04 Feb 2025 12:50:07 GMT
Install Reason : Installed as a dependency for another package
Install Script : No
Validated By : Signature
Backup Files : None
Extended Data : pkgtype=pkg
But going down the rabbit hole, it looks like there are a number of "sub-"dependencies of these.
I found this on the Forum from a couple of years back, it should help:
sudo pacman-mirrors --api --protocol http && sudo pacman-mirrors --fasttrack 5 && sudo pacman -Syyu
… I wouldn’t normally recommend the second y with pacman but it won’t hurt in this case.